Mosunov, A. A., A. S. Buchelnikov, and M. P. Evstigneev. “Complex Formation of Aromatic Biologicaly Active Compounds With Antibiotic Topotecan: Analysis by Means of 1h Nuclear Magnetic Resonance Spectroscopy”. Biophysical Bulletin, Vol. 1, no. 26, 1, https://periodicals.karazin.ua/biophysvisnyk/article/view/2547.